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Inventor:
Chen; Linfeng
Address:
Sugar Land, TX
No. of patents:
19
Patents:












Patent Number Title Of Patent Date Issued
8288585 Procatalyst composition with substitute 1,2-phenylene aromatic diester internal donor and method October 16, 2012
Disclosed are procatalyst compositions having an internal electron donor which include a substituted phenylene aromatic diester and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit high activity and produc
8263692 Propylene-based polymer, articles, and process for producing same September 11, 2012
Disclosed are propylene-based polymer compositions and processes for producing same. Polymerization with an improved catalyst composition provides a propylene-based polymer with improved stiffness.
8222357 Procatalyst composition with multiple internal donor having silyl ester and method July 17, 2012
Provided is a procatalyst composition containing a multiple internal electron donor with at least two components, one of which is a silyl ester. The other component of the mixed internal electron donor may be an electron donor component. The electron donor component may be an aromatic
8106138 Random propylene copolymer compositions, articles and process January 31, 2012
The present disclosure is directed to random propylene/.alpha.-olefin compositions, articles, and processes for producing the same. The present compositions contain a random copolymer of propylene and .alpha.-olefin. Polymerization with an improved catalyst composition increases the
8088872 Procatalyst composition including silyl ester internal donor and method January 3, 2012
The present disclosure provides silyl esters and silyl diol esters suitable as internal electron donors in procatalysts for polymer production. Disclosed are procatalyst compositions formed from a procatalyst precursor and an internal electron donor that is a silyl ester or a silyl d
8067510 High melt flow propylene impact copolymer and method November 29, 2011
The present disclosure provides a polymerization process for the production of a high melt flow propylene impact copolymer. The process includes contacting an active propylene-based polymer having a melt flow rate greater than about 100 g/10 min with one or more olefins in a polymeri
7989383 Self limiting catalyst composition and propylene polymerization process August 2, 2011
A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing co
7935766 Propylene impact copolymer and method May 3, 2011
Disclosed are propylene impact copolymer compositions, articles thereof, and processes for producing same. Polymerization with an improved catalyst composition provides a propylene impact copolymer with high melt flow and low volatiles content.
7893003 Catalyst composition with mixed selectivity control agent and method February 22, 2011
The present disclosure provides a Ziegler-Natta catalyst composition comprising a procatalyst, a cocatalyst and a mixed external electron donor comprising a first selectivity control agent, a second selectivity control agent, and an activity limiting agent. A polymerization process i
7781363 Self limiting catalyst composition and propylene polymerization process August 24, 2010
A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing co
7687426 Catalyst composition with monocarboxylic acid ester internal donor and propylene polymerization March 30, 2010
A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing
7678868 Self limiting catalyst composition and propylene polymerization process March 16, 2010
A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing co
7601664 Olefin polymerization catalyst compositions and method of preparation October 13, 2009
A method of making a solid procatalyst composition for use in a Ziegler-Natta olefin polymerization catalyst composition, said method comprising: contacting a precursor composition comprising a magnesium compound with a titanium halide compound and an internal electron donor in any
7491670 Self limiting catalyst composition and propylene polymerization process February 17, 2009
A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing co
7420021 Self-extinguishing catalyst composition with monocarboxylic acid ester internal door and propyle September 2, 2008
A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing
7393910 Catalyst composition for ethylene polymerization July 1, 2008
A process for the polymerization of olefin monomers comprising contacting ethylene or a mixture of ethylene and one or more C.sub.4-8 .alpha. olefins with a catalyst composition comprising one or more Group 3-10 transition metal containing, Ziegler-Natta, procatalyst compounds; one or
7393806 Catalyst composition with monocarboxylic acid ester internal donor and propylene polymerization July 1, 2008
A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing
7381779 Self limiting catalyst composition with dicarboxylic acid ester internal donor and propylene pol June 3, 2008
A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing co
7141635 Catalyst composition and polymerization process using mixtures of selectivity control agents November 28, 2006
A catalyst composition for the polymerization of olefins and process for the use thereof, comprising the combination of one or more Ziegler-Natta catalysts, comprising one or more transition metal compounds, one or more aluminum containing cocatalyts, and a mixture of different selectivi










 
 
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